Low charging and battery light staying on

[FlipFlopGriff]

The charge level is hovering either side of 13 (on Andreas 500 its a healthy 14 dropping to about 13 1/2 when the fans kick in) which is too low. It does crrep just the other side of 13 after a long run. It dies pretty quickly so needs constant charging. Also when I switch the ignition off the battery light stays on dimly for about a minute and fades away (this doesn't always happen just after a very long run). Suspect a short somewhere but would be useful to know any similar experiences. Its a pre cat with a mixture of precat, 500 and other wiring.
This is my last problem (other than the intermittent intermittent wiper but I know what that is), hopefully.
FFG

[spend]

Stick a mmeter on first & make sure its not the voltmeter, I'd try sticking another battery on if you have a spare.

Dave

[LordGrover]

How old's the battery?

Hey Granny, this is how you suck eggs ... Apologies if I'm suggesting the bleedin' obvious.

[GreenV8S]

I would suspect a faulty electronic unit in the alternator.

[Pasco]

GreenV8S said:

I would suspect a faulty electronic unit in the alternator.

Also Is the battery old Paul ?

[clive f]

had a similar problem on mine , found out it was the voltage regulator on the back of the alternator, got one from Lucas, about £35.

[Pasco]

Quinny said:

clive f said:

had a similar problem on mine , found out it was the voltage regulator on the back of the alternator, got one from Lucas, about £35.

Likewise

Sounds exactly the same as mine, and same fault.

I think you are spot on but just check the 100 amp fuse also

[spend]

Pasco said:

Quinny said:

clive f said:

had a similar problem on mine , found out it was the voltage regulator on the back of the alternator, got one from Lucas, about £35.

Likewise

Sounds exactly the same as mine, and same fault.

I think you are spot on but just check the 100 amp fuse also

Do pre-cats have those new fangled trouble making contraptions then?

Dave

[Pasco]

spend said:

Pasco said:

Quinny said:

clive f said:

had a similar problem on mine , found out it was the voltage regulator on the back of the alternator, got one from Lucas, about £35.

Likewise

Sounds exactly the same as mine, and same fault.

I think you are spot on but just check the 100 amp fuse also

Do pre-cats have those new fangled trouble making contraptions then?

Dave

:Shite:

[FlipFlopGriff]

Cheers Guys.
No 100amp fuse.
Battery is less than 12 months old but is OK when charged, just something discharging it so need top solve the problem before changing the battery (2 yr guarantee) and its non maintenence as opposed to the maintenance one that was in there previously.
Any idea on the part number or just a V8 Rover voltage regulator? There's a Lucas outlet (LSUK) about 4 miles from where I work so easy to get hold of one.
FFG

[clive f]

Ican tell you when I get home this evening, unless anyone else has it to hand in the meantime.

[spend]

There was a chap on fleabay selling Lucas service kits quite reasonable (£30 for all parts IIRC). The service kits are much more widely used than odd fitting front case we use as part of a quite common alt.

Dave

[clive f]

Lucas part number for voltage regulator 138789, £41.24 including vat.



I suggest you get this BEFORE you go down the pub, or you might come back with a headlight bulb for a mini metro!

[spend]

The alts fitted to pre-serps and serps are quite different BTW as I'm sure FFG is aware.

Dave

[Pasco]

spend said:

The alts fitted to pre-serps and serps are quite different BTW as I'm sure FFG is aware.

Dave

Do you think Fordy has offered the wrong numbers then Spendy

[spend]

I'd want to make sure before parting with 20 beer tokens

Dave

[clive f]

Pasco said:

spend said:

The alts fitted to pre-serps and serps are quite different BTW as I'm sure FFG is aware.

Dave

Do you think Fordy has offered the wrong numbers then Spendy

sod off fatboy he asked for the part number, an I duly obliged, wether its right for a pre cat or not though I`m not sure, but I`m sure the nice SLIM men at Lucas will tell him is its correct or not. :upyoursbignose:


Think I`ll go an eat a nice bag of chocolate donoughts,

hows the 2 bowls of special K going then matey

[Pasco]

clive f said:

Pasco said:

spend said:

The alts fitted to pre-serps and serps are quite different BTW as I'm sure FFG is aware.

Dave

Do you think Fordy has offered the wrong numbers then Spendy

sod off fatboy he asked for the part number, an I duly obliged, wether its right for a pre cat or not though I`m not sure, but I`m sure the nice SLIM men at Lucas will tell him is its correct or not. :upyoursbignose:


Think I`ll go an eat a nice bag of chocolate donoughts,

hows the 2 bowls of special K going then matey

F*CK Y*U

[FlipFlopGriff]

Cheers guys. I'll ask the Lucas chaps to see hat they say.
Will report back.
FFG

[spend]

You mean like this?
http://cgi.ebay.co.uk/LUCAS-A127-TYPE-ALTERNATOR-R...

Dave